Tuesday, 12 February 2008

Quite long time ago, I've proposed one simple way of estimatingcommunication cost of an MPI program (or multiple-instruction) appeared in the beowulf mailing list. Here is the outline of the procedure. [original post]

Definition Communication cost (Comm) is the ratio between the realtime used by all processors (processes actually if you use MPI)and global real cpu time (GRU).